Quadratic Form (statistics)
If is a vector of random variables, and is an -dimensional symmetric matrix, then the scalar quantity
is known as a quadratic form in .
Read more about Quadratic Form (statistics): Expectation, Variance, Examples of Quadratic Forms
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“I wage not any feud with Death
For changes wrought on form and face;
No lower life that earths embrace
May breed with him can fright my faith.”
—Alfred Tennyson (18091892)